An experimental method for pulse-width measurement in partial positions of an ultrashort-pulsed beam

Chao Tan; Xiquan Fu

doi:10.1117/12.2070835

18 November 2014 An experimental method for pulse-width measurement in partial positions of an ultrashort-pulsed beam

Chao Tan, Xiquan Fu

Proceedings Volume 9266, High-Power Lasers and Applications VII; 926605 (2014) https://doi.org/10.1117/12.2070835
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

We experimentally show a method for pulse-width measurement. Pulse widths at different partial positions of an ultrashort-pulsed beam are measured, results show that pulse widths in the center of the beam are less than that of in the edge because of the existence of residual chirp. We also investigate the temporal evolution at a strongest spatial modulation position of the beam during small-scale self-focusing, it finds that its pulse width decreases as power increases due to a spatiotemporal coupling effect. We find that this method not only can be used to accurately measure the pulse width at any one spatial position of the beam, but also be useful for real-time monitoring of spatial-temporal evolution.

Citation Download Citation

Chao Tan and Xiquan Fu "An experimental method for pulse-width measurement in partial positions of an ultrashort-pulsed beam", Proc. SPIE 9266, High-Power Lasers and Applications VII, 926605 (18 November 2014); https://doi.org/10.1117/12.2070835

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